CN101922660A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN101922660A CN101922660A CN 201010238182 CN201010238182A CN101922660A CN 101922660 A CN101922660 A CN 101922660A CN 201010238182 CN201010238182 CN 201010238182 CN 201010238182 A CN201010238182 A CN 201010238182A CN 101922660 A CN101922660 A CN 101922660A
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- emitting diode
- light emitting
- face
- backlight module
- lgp
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/009—Positioning aspects of the light source in the package
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
- G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0073—Light emitting diode [LED]
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a backlight module and a display device. The display device comprises the backlight module and a display panel. The backlight module comprises a light guide plate, a base, a first LED and a second LED. The base is arranged on one side of the light guide plate, the first LED is arranged on a first setting face of the base, and the second LED is arranged on a second setting face of the base. The distance between the first LED and the bottom face of the base is larger than the distance between the second LED and the bottom face of the base. The invention can improve the problem of color offset and improve the light coupling effect of the LEDs.
Description
[technical field]
The present invention relates to a kind of backlight module and display unit, particularly relate to a kind of backlight module and display unit of improving the colour cast problem.
[background technology]
(Liquid Crystal Display LCD) has been widely used in the various electronic products LCD, and the LCD major part is the backlight LCD, and it is made up of display panels and backlight module (backlight module).Backlight module can be divided into side direction type light inlet (Side-light type) and two kinds of straight-down negative light inlets (Direct-lighht type) according to the difference of light source incoming position, so that provide backlight to display panels.
Because light emitting diode (Light-Emitting Diode, LED) have low power consumption, lower calorific value, operation lifetime length, impact resistance, volume is little, reaction speed is fast and the good light electrical characteristics such as coloured light that can send wavelength stabilization, thereby is fit to be applied to the light source of backlight module.
Yet different photochromic light emitting diodes can have different luminous efficiencies, and the luminous efficiency of for example general green light LED can be lower than the luminous efficiency of ruddiness, blue light-emitting diode.Therefore, when utilizing different photochromic light emitting diodes to be mixed into white light, the problem of photochromic deviation takes place easily.
In order to improve the problems referred to above, a kind of mode of improving is the quantity that is provided with that increases the lower light emitting diode of luminous efficiency, for example increases the quantity that is provided with of green light LED.Yet this kind mode increases the cost and the caloric value of light emitting diode easily.
Another kind of improvement mode is the position that is provided with of improving light emitting diode, for example green light LED is arranged at the position of the exiting surface (upper surface of LGP just) of the LGP of close backlight module.Yet this kind mode still can't effectively be improved the problem of photochromic deviation.
So, be necessary to provide a kind of backlight module and display unit, to solve the existing in prior technology problem.
[summary of the invention]
Main purpose of the present invention is to provide a kind of backlight module, and described backlight module comprises:
LGP;
Pedestal is arranged at a side of described LGP, and wherein said pedestal has bottom surface, first and face and second is set face is set, and described first is provided with face and described second, and face is set is with respect to described bottom surface;
First light emitting diode is arranged at described first of described pedestal and is provided with on the face; And
Second light emitting diode, being arranged at described second of described pedestal is provided with on the face, the luminous efficiency of wherein said first light emitting diode is to be lower than described second light emitting diode, and the distance between described first light emitting diode and the described bottom surface is greater than the distance between described second light emitting diode and the described bottom surface.
Another object of the present invention is to provide a kind of display unit, described display unit comprises:
Display floater; And
Backlight module comprises:
LGP;
Pedestal is arranged at a side of described LGP, and wherein said pedestal has bottom surface, first and face and second is set face is set, and described first is provided with face and described second, and face is set is with respect to described bottom surface;
First light emitting diode is arranged at described first of described pedestal and is provided with on the face; And
Second light emitting diode, being arranged at described second of described pedestal is provided with on the face, the luminous efficiency of wherein said first light emitting diode is to be lower than described second light emitting diode, and the distance between described first light emitting diode and the described bottom surface is greater than the distance between described second light emitting diode and the described bottom surface.
In one embodiment of this invention, described backlight module also comprises the 3rd light emitting diode, being arranged at the 3rd of described pedestal is provided with on the face, the luminous efficiency of wherein said first light emitting diode is to be lower than described the 3rd light emitting diode, and the distance between described first light emitting diode and the described bottom surface is greater than the distance between described the 3rd light emitting diode and the described bottom surface.
In one embodiment of this invention, described first light emitting diode is a green light LED, and described second light emitting diode is red light-emitting diode or blue light-emitting diode.
In one embodiment of this invention, described pedestal is made with the metal material of high-termal conductivity.
In one embodiment of this invention, described pedestal has protuberance, and described first face is set is to be formed on the end face of described protuberance, and described second face is set is a side that is formed at described protuberance.
In one embodiment of this invention, described pedestal has protuberance, and described first face is set is to be formed on the end face of described protuberance, and described second face is set is to be formed on the sidewall of described protuberance.
In one embodiment of this invention, described LGP has the side incidence surface, and it is for being a plane.
In one embodiment of this invention, described LGP has the side incidence surface, and it forms U-shaped recess, V-arrangement recess or arc-shaped depression portion structure.
In one embodiment of this invention, the arc curvature radius (r) of described arc-shaped depression portion structure is according to formula:
r＝((h/2)
2+(r-d+h/2tanθ)
2)
0.5；
Wherein h is the thickness of described LGP, and d is the distance between described first light emitting diode and the side incidence surface, and the light source visual angle of described first light emitting diode is 2 θ.
Backlight module of the present invention and display unit can change different photochromic light emitting diodes and the coupling electrical distance between the LGP according to the luminous efficiency of light emitting diode, with the luminous intensity of the light emitting diode that compensates low luminous efficiency, and can improve the colour cast problem of backlight module.And compared to existing color bias improvement method, backlight module of the present invention can use less light emitting diode to reach photochromic effect of uniform, thereby can reduce unnecessary cost and energy charge.Moreover backlight module of the present invention can utilize the design of LGP further to promote the light coupling efficient of light emitting diode.
For foregoing of the present invention can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below:
[description of drawings]
Fig. 1 shows the partial cutaway schematic according to the backlight module and the display floater of the first embodiment of the present invention;
Fig. 2 shows the generalized section according to the pedestal and the light emitting diode of the first embodiment of the present invention;
Fig. 3 shows the generalized section according to the pedestal and the light emitting diode of the second embodiment of the present invention;
Fig. 4 A to Fig. 4 C shows the partial cutaway schematic according to the backlight module of the third embodiment of the present invention; And
Fig. 5 shows the partial cutaway schematic according to the LGP of the third embodiment of the present invention.
[specific embodiment]
Below the explanation of each embodiment be with reference to additional graphic, can be in order to illustration the present invention in order to the specific embodiment of implementing.The direction term that the present invention mentioned, for example " on ", D score, " preceding ", " back ", " left side ", " right side ", " interior ", " outward ", " side " etc., only be direction with reference to annexed drawings.Therefore, the direction term of use is in order to explanation and understands the present invention, but not in order to restriction the present invention.
In the drawings, the unit of structural similarity is to represent with same numeral.
Please refer to Fig. 1, it shows the partial cutaway schematic according to the backlight module and the display floater of the first embodiment of the present invention.The backlight module 100 of present embodiment can for example be the backlight module of side direction type light inlet, and it is provided with respect to a display floater 101 (for example display panels), and forms a display unit (for example liquid crystal indicator).Backlight module 100 includes backboard 110, pedestal 120, LGP 130, reflecting layer 140, blooming piece 150, first light emitting diode 160, second light emitting diode 170 and the 3rd light emitting diode 180.Backboard 110 can be made by light-proof material, for example is the combination of plastifying material, metal material or above-mentioned material.Pedestal 120, LGP 130, reflecting layer 140 and blooming piece 150 are to be carried on the backboard 110, pedestal 120 can be arranged at a side or the relative both sides of LGP 130, in order to light emitting diode 160,170 and 180 to be set, but light emitting diode 160,170 and 180 lateral direction light emissions and are guided bright dipping by LGP 130 to LGP 130.Reflecting layer 140 is the bottoms that are arranged at LGP 130, enters light in the LGP 130 in order to reflection.Blooming piece 150 is to be arranged on the LGP 130, to improve optical effect.
Please refer to Fig. 2, it shows the generalized section according to the pedestal and the light emitting diode of the first embodiment of the present invention.The pedestal 120 of present embodiment is in order to light emitting diode 160,170 and 180 to be set in a side or the relative both sides of LGP 130.Pedestal 120 is preferably made with the metal material of high-termal conductivity, to promote the radiating efficiency of light emitting diode 160,170 and 180, this metal material for example is silver, copper, copper alloy, Kufil, aluminium, aluminium alloy and above-mentioned any alloy thereof, and can utilize extrusion modling, punching press, cut, method such as casting, machining, die casting or forging makes.Pedestal 120 can have bottom surface 122, first and face 124, second is set face 126 and the 3rd is set face 128 is set.The bottom surface 122 of pedestal 120 is with respect to LGP 130, is with respect to bottom surface 122 and face 124,126 and 128 is set, and towards LGP 130, in order to light emitting diode 160,170 and 180 to be set.First face 124 is set is that face 126 is set is that face 128 is set is in order to the 3rd light emitting diode 180 to be set in order to second light emitting diode 170, the three to be set in order to first light emitting diode 160, the second to be set.Wherein, first distance that is provided with between face 124 and the bottom surface 122 is the distance that is provided with between face 126 and the bottom surface 122 greater than second, and greater than the 3rd distance that is provided with between face 128 and the bottom surface 122, by this, compared to second light emitting diode 170 and the 3rd light emitting diode 180, be positioned at first first light emitting diode 160 that is provided with on the face 124 and can be close to LGP 130.In the present embodiment, pedestal 120 can be for example for having the strip pedestal of T shape section shape, it has a protuberance, first is provided with on the end face that face 124 can be formed at this protuberance, and second and third is provided with the both sides that face 126 and 128 can be formed at this protuberance respectively.
Shown in the 1st figure, the LGP 130 of present embodiment is to be arranged on the backboard 110, and be positioned at a side of pedestal 120, with light emitting diode 160,170 on the guiding pedestal 120 and 180 light, LGP 130 for example is to utilize the mode of ejection formation to make disk construction, and its material for example is photo-hardening type resin, polymethyl methacrylate (PMMA) or Merlon (PC).LGP 130 can comprise exiting surface 131, light reflection surface 132 and side incidence surface 133.Exiting surface 131 is the fronts that are positioned at LGP 130, is issued to display floater 101 in order to allow light by LGP 130, and light reflection surface 132 is the bottom surfaces that are positioned at LGP 130, and with respect to exiting surface 131.The side incidence surface 133 of LGP 130 is a side or the relative both sides that are formed at LGP 130, it can enter in the LGP 130 in order to allow light emitting diode 160,170 and 180 light that sent corresponding to the light emitting diode on the pedestal 120 160,170 and 180.And this side incidence surface 133 can have for example v-shaped structure (V-Cut), S shape wave structure or surface roughening processing (not illustrating), uses the incident efficient and the coupling efficiency that promote light.In the present embodiment, this side incidence surface 133 can be a plane, and it is perpendicular to light reflection surface 132.
Shown in the 1st figure, the LGP 130 of present embodiment can be provided with light guide structure on light reflection surface 132, uses the light that reflection guiding sent by light source 120 and can be penetrated by exiting surface 131, is preferably forward and penetrates (forward bright dipping).The light guide structure of LGP 130 for example is to be successional v-shaped structure, that is V-Cut structure (for example being to utilize the mode of ejection formation or micro-cutting moulding to form), cloudy surface structure (for example being to utilize blasting treatment to form), scattering point structure (for example being to utilize screen printing, laser retrofit or one-body molded formation), use guiding and can penetrate by exiting surface 131 fully by the light that side incidence surface 133 enters LGP 130.
Exiting surface 131 that it should be noted that LGP 130 also can have cloudy surface processing or scattering point design, uses the bright dipping of homogenising LGP 130, reduces the phenomenon of bright dipping inequality (Mura).
Shown in the 1st figure, the reflecting layer 140 of present embodiment is reflection diaphragm or reflectance coating for example, and it has highly reflective material, marches to the light of light reflection surface 132 in order to reflection.This highly reflective material can for example be any combination that the alloy of silver, aluminium, gold, chromium, copper, indium, iridium, nickel, platinum, rhenium, rhodium, tin, tantalum, tungsten, manganese, above-mentioned any combination, anti-yellow and heat-resisting white reflect paint vehicle or above-mentioned material, with reflection ray.Light reflection surface 132 that it should be noted that LGP 130 also can be coated with this highly reflective material, with the reflection incident ray, thereby can further replace or omit reflecting layer 140.
As shown in Figure 1, the blooming piece 150 of present embodiment can for example be diffusion sheet, prismatic lens, inverse edge eyeglass (Turning Prism Sheet), brightness enhancement film (BrightnessEnhancement Film, BEF), reflective brightness enhancement film (Dual Brightness Enhancement Film, DBEF), non-multilayer membrane type reflective polarizers (Diffused Reflective Polarizer Film, DRPF) or above-mentioned any combination, it is arranged on the exiting surface 131 of LGP 130, in order to improve the optical effect by LGP 130 bright dippings.
As shown in Figure 1, the light emitting diode 160,170 and 180 of present embodiment is to be arranged at respectively on the face that is provided with 124,126 and 128 of pedestal 120.Wherein, the luminous efficiency of first light emitting diode 160 is the luminous efficiencies that are lower than second light emitting diode 170, and the luminous efficiency that is lower than the 3rd light emitting diode 180.For example, first light emitting diode 160 is a green light LED, and second light emitting diode 170 and the 3rd light emitting diode 180 can be respectively red light-emitting diode and blue light-emitting diode.In the present embodiment, because first distance that is provided with between face 124 and the bottom surface 122 is the distance that is provided with between face 126,128 and the bottom surface 122 greater than the second or the 3rd, therefore, the distance between first light emitting diode 160 and the bottom surface 122 is greater than the distance between the second or the 3rd light emitting diode 170,180 and the bottom surface 122.Moreover first light emitting diode 160 preferably is arranged between second light emitting diode 170 and the 3rd light emitting diode 180, that is first light emitting diode 160 is preferably to being positioned at the centre position of LGP 130.
When light emitting diode 160,170 and 180 being set on the face that is provided with 124,126 and 128 of pedestal 120 time, a plurality of light emitting diodes 160,170 and 180 can be arranged on the circuit board 102 earlier, and forming luminous lamp strip (Light Bar), the luminous lamp strip that will have light emitting diode 160,170 and 180 more respectively is engaged on the face that is provided with 124,126 and 128 of pedestal 120.
Therefore, light emitting diode 160 on pedestal 120,170 and 180 is luminous during to LGP 130, because lower first light emitting diode 160 and the distance between the LGP 130 of luminous efficiency is less than the second or the 3rd light emitting diode 170,180 and LGP 130 between distance, thereby can increase the light coupling efficient of first light emitting diode 160, to compensate the low luminous efficiency of first light emitting diode 160, make by light emitting diode 160,170 and 180 different color lights that are emitted to LGP 130 can have the identical luminous intensity of essence, thereby significantly improve the colour cast problem of backlight module 100.
Please refer to Fig. 3, it shows the generalized section according to the pedestal and the light emitting diode of the second embodiment of the present invention.Below only describe with regard to the different place between the present embodiment and first embodiment, its resemblance does not then repeat them here.Compared to first embodiment, the pedestal 220 of second embodiment has protuberance 221, bottom surface 222, first and face 224, second is set face 226 and the 3rd is set face 228 is set, first face 224 is set is to be formed on the end face of this protuberance, and second is provided with face 226 and the 3rd and is provided with on the both sides sidewall that face 228 can be formed at this protuberance 221 respectively.At this moment, light emitting diode 160,170 and 180 can be arranged at earlier on the circuit board 102, is assembled in respectively on the face that is provided with 224,226 and 228 that is formed on the protuberance 221 again.This light emitting diode 170 and 180 is side light extracting LED (side view LED).
Please refer to Fig. 4 A to Fig. 4 C, it shows the partial cutaway schematic according to the backlight module of the third embodiment of the present invention.Below only describe with regard to the different place between the present embodiment and first embodiment, its resemblance does not then repeat them here.Compared to first embodiment, the LGP 330 of the 3rd embodiment comprises exiting surface 331, light reflection surface 332 and side incidence surface 333, wherein side incidence surface 333 can be for first light emitting diode 160, and be arranged with towards the inside of LGP 330, and form U-shaped recess (shown in Fig. 4 A), V-arrangement recess (shown in Fig. 4 B) or arc-shaped depression portion structure (shown in Fig. 4 C), in order to the light coupling efficient of further lifting light emitting diode 160,170 and 180.Depth capacity in these side incidence surface 333 recessed LGPs 330 preferably is same as first face 224 and the second or the 3rd distance that is provided with between face 126 or 128 is set.
Please refer to figure Fig. 5, it shows the partial cutaway schematic according to the LGP of the third embodiment of the present invention.In the present embodiment, when the side incidence surface 333 of LGP 330 for example during curved recess structure, the arc curvature radius r of this arc-shaped depression portion structure can be according to following formula (1):
r＝((h/2)
2+(r-d+h/2tanθ)
2)
0.5 (1)
Wherein, as shown in Figure 5, h is the thickness of LGP 330, and d is the distance between first light emitting diode 160 and the side incidence surface 333, and the light source visual angle of first light emitting diode 160 is 2 θ.Therefore, the arc curvature ρ of this arc-shaped depression portion structure can be according to following formula (2):
ρ＝1/r＝1/((h/2)
2+(r-d+h/2tanθ)
2)
0.5 (2)
From the above, backlight module of the present invention and display unit can be adjusted the position that is provided with of light emitting diode according to the luminous efficiency of different photochromic light emitting diodes, also can change the coupling electrical distance between light emitting diode and the LGP according to the luminous efficiency of light emitting diode, to compensate the luminous intensity of the light emitting diode (as green light LED) that hangs down luminous efficiency, make the different color light that is issued in the LGP by light emitting diode can have the identical luminous intensity of essence, thereby can significantly improve the colour cast problem of backlight module.Therefore, for example the light that light emitting diode sent by R-G-B three looks can be mixed into a pure white light equably, to promote the mixed light effect of light emitting diode.Moreover, improve the mode of colour cast problem compared to the quantity of the light emitting diode of the low luminous efficiency of existing increase, because backlight module of the present invention can not need increase the quantity of the light emitting diode of extra low luminous efficiency, thereby can reduce unnecessary cost and energy charge.
In sum; though the present invention discloses as above with preferred embodiment; but above preferred embodiment is not in order to restriction the present invention; those of ordinary skill in the art; without departing from the spirit and scope of the present invention; all can do various changes and retouching, so protection scope of the present invention is as the criterion with the scope that claim defines.
Claims (8)
1. backlight module, it is characterized in that: described backlight module comprises:
LGP;
Pedestal is arranged at a side of described LGP, and wherein said pedestal has bottom surface, first and face and second is set face is set, and described first is provided with face and described second, and face is set is with respect to described bottom surface;
First light emitting diode is arranged at described first of described pedestal and is provided with on the face; And
Second light emitting diode, being arranged at described second of described pedestal is provided with on the face, the luminous efficiency of wherein said first light emitting diode is to be lower than described second light emitting diode, and the distance between described first light emitting diode and the described bottom surface is greater than the distance between described second light emitting diode and the described bottom surface.
2. backlight module according to claim 1, it is characterized in that: also comprise the 3rd light emitting diode, being arranged at the 3rd of described pedestal is provided with on the face, the luminous efficiency of wherein said first light emitting diode is to be lower than described the 3rd light emitting diode, and the distance between described first light emitting diode and the described bottom surface is greater than the distance between described the 3rd light emitting diode and the described bottom surface.
3. backlight module according to claim 1 is characterized in that: described first light emitting diode is a green light LED, and described second light emitting diode is red light-emitting diode or blue light-emitting diode.
4. backlight module according to claim 1 is characterized in that: described pedestal is made with the metal material of high-termal conductivity.
5. backlight module according to claim 1, it is characterized in that: described pedestal has protuberance, described first face is set is to be formed on the end face of described protuberance, and described second face is set is to be formed at a side of described protuberance or to be formed on the sidewall of described protuberance.
6. backlight module according to claim 1 is characterized in that: described LGP has the side incidence surface, and it is a plane, U-shaped recess, V-arrangement recess or arc-shaped depression portion structure.
7. backlight module according to claim 6 is characterized in that: the arc curvature radius (r) of described arc-shaped depression portion structure is according to formula:
r＝((h/2)
2+(r-d+h/2tanθ)
2)
0.5；
Wherein h is the thickness of described LGP, and d is the distance between described first light emitting diode and the side incidence surface, and the light source visual angle of described first light emitting diode is 2 θ.
8. display unit, it is characterized in that: described display unit comprises:
Display panels; And it is described as any claim of claim 1 to 7
Backlight module.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010238182 CN101922660A (en) | 2010-07-23 | 2010-07-23 | Backlight module and display device |
| US12/995,591 US8622601B2 (en) | 2010-07-23 | 2010-09-30 | Backlight module and display apparatus |
| PCT/CN2010/077552 WO2012009882A1 (en) | 2010-07-23 | 2010-09-30 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010238182 CN101922660A (en) | 2010-07-23 | 2010-07-23 | Backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101922660A true CN101922660A (en) | 2010-12-22 |
Family
ID=43337757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010238182 Pending CN101922660A (en) | 2010-07-23 | 2010-07-23 | Backlight module and display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101922660A (en) |
| WO (1) | WO2012009882A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120163023A1 (en) * | 2010-12-23 | 2012-06-28 | Hyoung-Joo Kim | Display apparatus having thermally protected backlight assembly |
| CN102927496A (en) * | 2011-08-10 | 2013-02-13 | Lg伊诺特有限公司 | Backlight unit |
| CN103018959A (en) * | 2012-12-26 | 2013-04-03 | 深圳市华星光电技术有限公司 | Liquid crystal display module |
| CN103363398A (en) * | 2012-03-26 | 2013-10-23 | 三星显示有限公司 | Backlight assembly |
| TWI425169B (en) * | 2011-07-07 | 2014-02-01 | Innolux Corp | Lighting apparatus, backlight module and display apparatus |
| CN105700231A (en) * | 2016-02-04 | 2016-06-22 | 友达光电股份有限公司 | Light source module |
| CN107728249A (en) * | 2016-08-12 | 2018-02-23 | 群创光电股份有限公司 | Display device |
| US10007047B2 (en) | 2010-12-23 | 2018-06-26 | Samsung Display Co., Ltd. | Display apparatus having thermally protected backlight assembly |
| US11036081B2 (en) | 2016-08-12 | 2021-06-15 | Innolux Corporation | Display device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003187622A (en) * | 2001-12-18 | 2003-07-04 | Sharp Corp | Lighting device and display device |
| CN1591914A (en) * | 2003-08-27 | 2005-03-09 | 力捷电脑股份有限公司 | Lighting device of LED element |
| CN1612017A (en) * | 2003-10-27 | 2005-05-04 | 鸿富锦精密工业（深圳）有限公司 | Back light module assembly and its light guide board |
| US20060203465A1 (en) * | 2005-03-09 | 2006-09-14 | Hannstar Display Corporation | Back light source module |
| CN201017141Y (en) * | 2006-12-18 | 2008-02-06 | 科桥电子股份有限公司 | Light source device of backlight module |
| CN101324681A (en) * | 2007-06-12 | 2008-12-17 | 罗振万 | High luminance light guide board |
| CN101556402A (en) * | 2008-04-09 | 2009-10-14 | 北京京东方光电科技有限公司 | LED backlight module and light guide plate used by same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4226796B2 (en) * | 2001-05-30 | 2009-02-18 | 株式会社日立製作所 | Liquid crystal display |
| WO2007138763A1 (en) * | 2006-06-01 | 2007-12-06 | Sharp Kabushiki Kaisha | Surface-area light source device and liquid crystal display device using the same |
| CN200979631Y (en) * | 2006-07-07 | 2007-11-21 | 科桥电子股份有限公司 | A light source device for backlight device |
| JP2008153057A (en) * | 2006-12-18 | 2008-07-03 | Citizen Electronics Co Ltd | Light source unit, backlight unit, and display device |
-
2010
- 2010-07-23 CN CN 201010238182 patent/CN101922660A/en active Pending
- 2010-09-30 WO PCT/CN2010/077552 patent/WO2012009882A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003187622A (en) * | 2001-12-18 | 2003-07-04 | Sharp Corp | Lighting device and display device |
| CN1591914A (en) * | 2003-08-27 | 2005-03-09 | 力捷电脑股份有限公司 | Lighting device of LED element |
| CN1612017A (en) * | 2003-10-27 | 2005-05-04 | 鸿富锦精密工业（深圳）有限公司 | Back light module assembly and its light guide board |
| US20060203465A1 (en) * | 2005-03-09 | 2006-09-14 | Hannstar Display Corporation | Back light source module |
| CN201017141Y (en) * | 2006-12-18 | 2008-02-06 | 科桥电子股份有限公司 | Light source device of backlight module |
| CN101324681A (en) * | 2007-06-12 | 2008-12-17 | 罗振万 | High luminance light guide board |
| CN101556402A (en) * | 2008-04-09 | 2009-10-14 | 北京京东方光电科技有限公司 | LED backlight module and light guide plate used by same |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120163023A1 (en) * | 2010-12-23 | 2012-06-28 | Hyoung-Joo Kim | Display apparatus having thermally protected backlight assembly |
| US10007047B2 (en) | 2010-12-23 | 2018-06-26 | Samsung Display Co., Ltd. | Display apparatus having thermally protected backlight assembly |
| TWI425169B (en) * | 2011-07-07 | 2014-02-01 | Innolux Corp | Lighting apparatus, backlight module and display apparatus |
| CN102927496A (en) * | 2011-08-10 | 2013-02-13 | Lg伊诺特有限公司 | Backlight unit |
| EP2557439A1 (en) * | 2011-08-10 | 2013-02-13 | LG Innotek Co., Ltd. | Backlight unit |
| US9864123B2 (en) | 2011-08-10 | 2018-01-09 | Lg Innotek Co., Ltd. | Backlight unit |
| CN103363398B (en) * | 2012-03-26 | 2016-11-23 | 三星显示有限公司 | Backlight assembly |
| CN103363398A (en) * | 2012-03-26 | 2013-10-23 | 三星显示有限公司 | Backlight assembly |
| CN103018959A (en) * | 2012-12-26 | 2013-04-03 | 深圳市华星光电技术有限公司 | Liquid crystal display module |
| CN103018959B (en) * | 2012-12-26 | 2015-12-02 | 深圳市华星光电技术有限公司 | A kind of liquid crystal module |
| WO2014101305A1 (en) * | 2012-12-26 | 2014-07-03 | 深圳市华星光电技术有限公司 | Liquid crystal module |
| CN105700231A (en) * | 2016-02-04 | 2016-06-22 | 友达光电股份有限公司 | Light source module |
| CN107728249A (en) * | 2016-08-12 | 2018-02-23 | 群创光电股份有限公司 | Display device |
| CN107728249B (en) * | 2016-08-12 | 2021-03-30 | 群创光电股份有限公司 | Display device |
| US11036081B2 (en) | 2016-08-12 | 2021-06-15 | Innolux Corporation | Display device |
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